127447091 has 2 divisors, whose sum is σ = 127447092. Its totient is φ = 127447090.

The previous prime is 127447049. The next prime is 127447109. The reversal of 127447091 is 190744721.

Together with next prime (127447109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127447091 - 2²⁶ = 60338227 is a prime.

It is a super-2 number, since 2×127447091² = 32485522008724562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (127447291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63723545 + 63723546.

It is an arithmetic number, because the mean of its divisors is an integer number (63723546).

Almost surely, 2^127447091 is an apocalyptic number.

127447091 is a deficient number, since it is larger than the sum of its proper divisors (1).

127447091 is an equidigital number, since it uses as much as digits as its factorization.

127447091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 127447091 is about 11289.2466976322. The cubic root of 127447091 is about 503.2417250157.

The spelling of 127447091 in words is "one hundred twenty-seven million, four hundred forty-seven thousand, ninety-one".